21,343 in words
21,343
twenty-one thousand three hundred forty-three
21,343 is written twenty-one thousand three hundred forty-three.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred forty-third
- Expanded form
- 20,000 + 1,000 + 300 + 40 + 3
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 3 | 3 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 7, 3,049 and 21,343 (4 factors)
- First 10 multiples
- 21,343, 42,686, 64,029, 85,372, 106,715, 128,058, 149,401, 170,744, 192,087, 213,430
- Square
- 21,343 × 21,343 = 455,523,649
- Square root
- ≈ 146.09
- Sum of the digits
- 2 + 1 + 3 + 4 + 3 = 13
- Rounded to the nearest 10
- 21,340
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,342
- Number after
- 21,344
- In binary
101001101011111
Quick check
What number comes just after 21,343?
Show the answer
21,344
Is 21,343 even or odd?
Show the answer
Odd
What is 21,343 + 10?
Show the answer
21,353
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 21,343 in words?
21,343 is written "twenty-one thousand three hundred forty-three".
Is 21,343 a prime number?
No. 21,343 is a composite number, because it has more than two factors.
What are the factors of 21,343?
The factors of 21,343 are 1, 7, 3,049 and 21,343.